This is information on a product in full production. The product is the L6566BH multimode controller for SMPS. It features selectable multimode operation, high voltage startup, advanced light load management, low quiescent current, adaptive UVLO, line feedforward, pulse-by-pulse OCP, shutdown on overload, transformer saturation detection, programmable frequency modulation, latched or auto-restart OVP, brownout protection, totem pole gate driver, and is suitable for industrial SMPS and SMPS running off rectified 3-phase input line.
The L6566BH is a versatile current-mode primary controller IC specifically designed for high-performance offline flyback converters running off rectified 3-phase input lines. It supports both fixed-frequency (FF) and quasi-resonant (QR) operation modes, allowing users to choose the optimal configuration for their application needs.
The device features an externally programmable oscillator, selectable multimode operation, and advanced light load management. Key capabilities include an on-board 840 V high voltage startup circuit, adaptive UVLO, and various protection functions such as pulse-by-pulse overcurrent protection (OCP), output overvoltage protection (OVP), and brownout protection. It is available in the SO16N package.
| High voltage startup capability | 840 V |
|---|---|
| Quiescent current | <3 mA |
| Maximum duty cycle (FF mode) | 70% |
It is specifically designed for offline flyback converters running off rectified 3-phase input lines.
The device supports both fixed-frequency (FF) and quasi-resonant (QR) operation.
It helps minimize issues related to fluctuations of the self-supply voltage due to transformer parasites.